Ontology highlight
ABSTRACT:
SUBMITTER: Zhan ZJ
PROVIDER: S-EPMC2959672 | biostudies-literature | 2008 Oct
REPOSITORIES: biostudies-literature
Zhan Zha-Jun ZJ Bian Hong-Ling HL Shan Wei-Guang WG
Acta crystallographica. Section E, Structure reports online 20081031 Pt 11
THE TITLE COMPOUND [SYSTEMATIC NAME: 11β-hydr-oxy-24,25-ep-oxy-3,16-oxo-protost-13 (17)-en-23-yl acetate], C(32)H(48)O(6), a protostane-type triterpenoid, was isolated from the Chinese herbal medicine alismatis rhizoma (the rhizome of Alisma orientalis Juzep). The mol-ecule contains four trans-fused rings, viz. three six-membered and one five-membered ring. Two of the six-membered rings have slightly distorted half-chair conformations, while the third exhibits a chair conformation. The five-memb ...[more]